xref: /onnv-gate/usr/src/ucblib/libcurses/tstp.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
3*0Sstevel@tonic-gate  * Use is subject to license terms.
4*0Sstevel@tonic-gate  */
5*0Sstevel@tonic-gate 
6*0Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
7*0Sstevel@tonic-gate /*	  All Rights Reserved  	*/
8*0Sstevel@tonic-gate 
9*0Sstevel@tonic-gate /*
10*0Sstevel@tonic-gate  * Copyright (c) 1980 Regents of the University of California.
11*0Sstevel@tonic-gate  * All rights reserved.  The Berkeley software License Agreement
12*0Sstevel@tonic-gate  * specifies the terms and conditions for redistribution.
13*0Sstevel@tonic-gate  */
14*0Sstevel@tonic-gate 
15*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
16*0Sstevel@tonic-gate 
17*0Sstevel@tonic-gate #ifndef lint
18*0Sstevel@tonic-gate static char
19*0Sstevel@tonic-gate sccsid[] = "@(#)tstp.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
20*0Sstevel@tonic-gate #endif /* not lint */
21*0Sstevel@tonic-gate 
22*0Sstevel@tonic-gate #include	<sys/types.h>
23*0Sstevel@tonic-gate #include	<signal.h>
24*0Sstevel@tonic-gate #include	"curses.ext"
25*0Sstevel@tonic-gate #include	<sgtty.h>
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate /*
28*0Sstevel@tonic-gate  * handle stop and start signals
29*0Sstevel@tonic-gate  *
30*0Sstevel@tonic-gate  * @(#)tstp.c	5.1 (Berkeley) 6/7/85
31*0Sstevel@tonic-gate  */
32*0Sstevel@tonic-gate 
33*0Sstevel@tonic-gate void
tstp(void)34*0Sstevel@tonic-gate tstp(void)
35*0Sstevel@tonic-gate {
36*0Sstevel@tonic-gate #ifdef SIGTSTP
37*0Sstevel@tonic-gate 
38*0Sstevel@tonic-gate 	SGTTY	tty;
39*0Sstevel@tonic-gate #ifdef DEBUG
40*0Sstevel@tonic-gate 	if (outf)
41*0Sstevel@tonic-gate 		(void) fflush(outf);
42*0Sstevel@tonic-gate #endif
43*0Sstevel@tonic-gate 	tty = _tty;
44*0Sstevel@tonic-gate 	(void) mvcur(0, COLS - 1, LINES - 1, 0);
45*0Sstevel@tonic-gate 	(void) endwin();
46*0Sstevel@tonic-gate 	(void) fflush(stdout);
47*0Sstevel@tonic-gate 	/* reset signal handler so kill below stops us */
48*0Sstevel@tonic-gate 	(void) signal(SIGTSTP, SIG_DFL);
49*0Sstevel@tonic-gate 	(void) sigsetmask(sigblock(0) &~ sigmask(SIGTSTP));
50*0Sstevel@tonic-gate 	(void) kill(0, SIGTSTP);
51*0Sstevel@tonic-gate 	(void) sigblock(sigmask(SIGTSTP));
52*0Sstevel@tonic-gate 	(void) signal(SIGTSTP, (void(*)(int))tstp);
53*0Sstevel@tonic-gate 	_tty = tty;
54*0Sstevel@tonic-gate 	(void) stty(_tty_ch, &_tty);
55*0Sstevel@tonic-gate 	(void) wrefresh(curscr);
56*0Sstevel@tonic-gate #endif	/* SIGTSTP */
57*0Sstevel@tonic-gate }
58